Drill-press.



No. 738,246. I l PATBNTED SEPT. 8,' 1903. S. G. SCHAUER. DRILL PRESS.

APPLICATION FILED JULY 6, 1903..

N0 MODEL.

wvmsns. Sherman C. Scham. lNvaNroK.

NITED STATES Patented September 8, 1903 PATENT OEEicE.

SHERMAN C. SCHAUER, OF CINCINNATI, OHIO, ASSIGNOR TO CINCINNATI MACHINE TOOL CO., OF CINCINNATI, OHIO, A COPARTNERSHIP CON- SISTING OF IIIMSELF AND AUGUST H. TUECHTER, OF CINCINNATI, OHIO.

DRILL-PRESS.

SPLECFICATION forming part of Letters Patent No. 738,246, dated September 8, 1903. Original application tiled July 30, 1902, Serial No. 117.656. Divided and this application filed July 6, 1903. Serial To @ZZ whom t may concern:

Be it kn own that I, SHERMAN C. SCHAUER, a citizen of the United States, residing at Cincinnati, Ohio, have invented a new and useful Improvement in Drill-Presses, of which the following is a specification.

My invention relates to drill-presses, and this is a divisional application of my application for drillpresses serially numbered 1o 117,656 and filed July 30, 1902.

The objects of my invention are to provide means to rotate the spindle more rapidly in a rearward than in a forward direction to better adapt it for tapping purposes and to provideadetachablereversingmechanism forthe spindle which may be disengaged from action without being detached from the frame. These objects are attained in the followingdescribed manner, as illustrated in the aczo companying drawings, in which- Figure 1 is a side elevation of a portion of a drill-press embodying myimprovement, and

Fig. 2 a front elevation showing the driving and reversing gears. In the drawings, S represents the frame mounted on column 9 and formed with gearbearing 11 and shaft-bearings 12. Drivingshaft 13 is journaled in bearings 12 and provided with step-pulley 14, splined thereon, 3o and with driving bevel-pinion 15, removably secured thereon by means of taper pin or setscrew 10 in its hub 32. Bevel-gear 16 engages with pinion 15 and is formed with ahub whereby it is journaled in bearing 11. Bracket 18 may be substituted for the usual caps on bearings 12 and removably secured to the frame by means of cap-screws. Said bracket is formed with bearing 27 to register with bearing 11 and is provided with a stud 4o 28, which projects therefrom parallel to the driving-shaft. Bevel-pinion 19 ofthe same size and similar to pinion 15 is idly mounted on said stud and in the same vertical plane with said pinion 15. Bevel-gear 21 of the same size and similar to gear 16 engages with pinion 19 and is formed with an extended hub whereby it is journaled in bearing 27, with its face toward that of gear 16.

direction, as desired.

(No model.)

A small spur-gear 23 is secured on the rear end of pinion 19, and a larger spur-gear 22 is 5o splined or otherwise removablysecured on the rear end of hub 32 of pinion 15 and in the same plane with gear 23. Intermediate spurgear 24 is mounted on arm 7 in continuous engagement with gear 2 Said arm is piv- 55 otally mounted concentric with the axis of said gear 23 and may be adjustably secured with gear 24 either in or out of engagement with gear 22 by means of clamping-screw 25 being engaged with curved link 26, which pro- 6o jects from the said bracket 18 concentric with the axis of gear 23. When intermediate gear 24 is secured in engagement with gear 22, bevel-gears 16 and 2l are rotated simultaneously in opposite directions and at different speeds proportioned to the different size of gears 22 and 23. l

Set-screw 10 may be loosened and drivingshaft 13 moved axially in the bearings 12 for the removal therefrom of pinion 15, when a 7o diiferent-sized gear may be substituted on its hub for gear 22 to effect a change in the relation of the driving to the reversing speed of the spindle.

Drill-spindle 1'7 is movable axially through 75 gears 16 and 21, and sleeve 31 is splined thereon between said gears. Said sleeve is provided with clutch mechanisms adapted to frictionally and separately engage with said respective gears. Collar 41, splined on the 8o sleeve and controlled by means of hand-lever 43, serves to actuate the clutch mechanisms in or out of engagement with either of the respective gears 16 and 21, whereby the spindle maybe rotated in a forward or backward 85 Bracket 18, with the gears mounted thereon,

is distinctly a reversing attachment, which may be omitted in the manufacture or sale of the drill-presses and supplied thereafter, if de- 9o sired.

I am aware that drill-presses have been made and patented embodying means to rotate the spindle in opposite directions and at respectively dierent speeds. I do not claim such invention broadly; but

1o respective gears, of a spur-gear carried by said driving-pinion, a smaller-spur-gear carried by said driven pinion, an intermediate spur-gear i n continuous engagement with said smaller spur-gear, and means to detachably engage it with said larger spur-gear, Whereby the difference between the driving and reversing speeds of the spindle is graduated to correspond with the difference in the size of said larger and smaller spur-gears.

2. In a drill-press, the combination with a spindle, similar driving and reversing gears therefor, clutch mechanisms arranged to engage the respective gears with the spindle, an idle pinion mounted on a stud and engaging With said reversing-gear, a driving-shaft movable axially in its bearings, a driving-pinion removably secured thereon and engaging with said driving-gear, of a spur-gear removably secured on said drivingpinion, a smaller @Sasse spur-gear secured on said idle pinion, an intermediate spur-gear mounted idly on an arm and in continuous engagement with said smaller spur-gear, and adjustable by means of said arm in an arc concentric with said smaller spur-gear and in and out of engagement with said larger spur-gear, and means to secure said arm in ditterent positions of adjustment.

3. In a drill-press, the combination with a frame, a driving-shaft journaled thereon, a spindle, a driving-p inion, a driving-gear engaging therewith, a clutch mechanism ar- 

